CONFIG_ETRAX_LED4G is not available for thedefaultarchitecture x86.
Result is shown for architecture cris
default or selected kernelversion does not have config value CONFIG_ETRAX_LED4G.
Result is shown for kernelversion 6.7-rc3

Fourth green LED bit

configname: CONFIG_ETRAX_LED4G

Linux Kernel Configuration
└─>CRIS v10 options
└─>Fourth green LED bit
In linux kernel since version 2.6.12  
Bit to use for the fourth green LED.
For products with only one or two controllable LEDs,
set this to same as CONFIG_ETRAX_LED1G (normally 2).